At the V-Gate

Ranjith comes back to insti at 1:00 am after a lot of fun at Diff 42 resto lounge. The security guard doubts him and doesn't let him pass. Since the guard is bored, he plays the shell game with Ranjith and he promises to allow him in if he wins the game. The game is as follows: There are 3 cups and one of them contains a ball. Now the guard calls the swapping of two cups as an operation and perfor